Bluetooth Headphones, SAVFY Smallest in-Ear Invisible Mini Wireless Bluetooth 4.0 Headset Headphone Earphone with Mic for Running Car iPhone Samusng LG and Most Smartphones, Black SUPERB HD SOUND With Advanced bluetooth 4.0, the headphones ensure high-fidelity stereo music and clear speech within 10 meters. Experience realistic stereo digital quality sound on the go, enjoy natural sound. ERGONOMIC DESIGN Light weight with stylish design for extended comfort. Built for extreme activities like Running, Jogging, Hiking, Biking, Gym and Water Sport. POWERFUL BATTERY Up to 3 hours Music playing and 4 hours Talk time on a full battery charge. Super quick charge time of only 2 hours which lasts up to 3 or 4 days of standby time. PAIR 2 BLUETOOTH DEVICES AT A TIME The Bluetooth headphones for iPhone, Android phones & tablets and other Bluetooth devices can pair with 2 different devices simultaneously! You won't never miss a call while enjoying music. SO EASY TO USE The multi function are all right on one side, making these the most convenient Bluetooth earbuds for running, sports, lifting weights & more!